"Son of Heaven" harbor, neon lights on skyscraper lit up half the sky, with its tip submerged into the mist; the city is shrouded in run down, dark grey buildings, like satellite cities of this gigantic city.

Dwellers of this city are into junk disposal, crime, drugs, underground transactions... chaos, poverty, u named it... and here is where Falcon lives.

No one knows where Falcon came from, he only has bits and pieces of memories of parents he never met; brought up by an mechanical repair shop owner, who used him like a slave, live is filled with loneliness ... Falcon hangs out on the roof top of the repair shop often, looking at the birds flying freely up in the sky, where he wishes to be. Apart from this, all he had was intensive and long hours of working with metal and electronic parts, which made him an expert in cybertronics.

In AR2085, conflicts among cyborgs escalated, violence is everywhere in the city. One day, while Falcon was working in the repair shop, he was caught between a battle between an armed cyborg and the city's armored defense force and was severed injured and lost one of his arms, he managed to replace it with a cybernetic arm he was working on befored he passed out, and saved by a shadowy figure, who later became his mentor.

Falcon later joined the city's secret task force - “TechGear”, specialized in “complicated” and “dirty” jobs not executable by conventional forces. To stay stealthy, they wear no armor but a helmet to conceal their identities.

One day, after being missing for 3 months, Falcon's mentor was found by Faclon's team on a mission, for unknown reasons, his mentor attacked the team and was eventually killed by Falcon, before he felt, he said to Falcon, “My time is up... you are different, your memories are forged, go found out who you really are...”

Despite the mysterious betrayal of his mentor and what he told him, Falcon decided to stay on the team to discover the truth behind what really is going on...